Sensor data collection system in municipal environment

Abstract

The invention discloses a sensor data collecting system in urban environment, which belongs to the technical field of wireless self-organizing networks. The system of the invention comprises sensor nodes, a vehicle-mounted information transceiver, wireless access points and a data server. The sensor nodes are arranged on fixed positions in the urban environment and are used to record data in an observation zone, the wireless access points are arranged on the fixed positions in the urban environment and are connected with generated data of the data server, the vehicle-mounted information transceiver is arranged on mobile vehicles such as buses and is used to receive data which is collected by the sensor nodes through a wireless data transmission mode and to send the data to the data serverthrough the wireless access points in the wireless data transmission mode, and the data server receives and stores the data from each wireless access point. The system enables the sensor nodes which are deployed sparsely to realize data uploading without multiple hops, the power consumption of the sensor nodes is greatly lowered, the network service life is prolonged, the cost is low, and the expandability is good.

Description

technical field [0001] The invention relates to a sensor network system for realizing data collection in an urban environment, and belongs to the technical field of wireless ad hoc networks. [0002] Background technique [0003] A wireless sensor network is a wireless network composed of a group of multiple sensor nodes distributed in different locations in a wireless self-organizing manner. Publish perception results. [0004] as attached figure 1 As shown, the wireless sensor network system consists of multiple sensor nodes (black small squares), sink nodes (sink nodes) and user terminals. Among them, wireless communication is used between the sensors and between each sensor node and the sink node, and the sink node transmits the data to the user terminal through the Internet and other methods. [0005] The wireless sensor network is characterized by dense deployment of nodes, a large number of nodes, and a wide coverage area. In the application of urban environment d...

AI Technical Summary

Problems solved by technology

[0004]The wireless sensor network is characterized by dense deployment of nodes, a large number of nodes, and a wide coverage area. In the application of urban environment detection, it is often only in some specific locations in the city ( Area) to deploy a small number of sensors, such as detecting noise and air index, influenza virus or traffic flow in the city, does not need to deploy multiple sensor nodes densely in the entire area, due to the limited energy of sensor nodes, the wireless transmission range is limited ( For example, 50 meters), therefore, in such applications, due to the sparse deployment of sensors, the sensor nodes cannot be interconnected with each other, the existing sensor networking technology will fail, and the sensor cannot transmit data to the sink node through multi-hop

Available technologies include deploying high-power base stations to relay communications between sensor nodes to ensure sensor network connectivity, or additionally deploying more sensors to achieve network connectivity, all of which face a high cost

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